我觉得这个电影很有意思。

Wǒ juéde zhè gè diànyǐng hěn yǒuyìsi.

I think this movie is very interesting.

这个字是什么意思？

Zhège zì shì shénme yìsi?

What does this character mean?

你说这句话到底是什么意思？

Nǐ shuō zhè jù huà dàodǐ shì shénme yìsi?

What exactly do you mean by this sentence?